package com.xuecheng.content.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xuecheng.base.exception.XueChengPlusException;
import com.xuecheng.base.model.PageParams;
import com.xuecheng.base.model.PageResult;
import com.xuecheng.content.mapper.*;
import com.xuecheng.content.model.dto.AddCourseDto;
import com.xuecheng.content.model.dto.CourseBaseInfoDto;
import com.xuecheng.content.model.dto.EditCourseDto;
import com.xuecheng.content.model.dto.QueryCourseParamsDto;
import com.xuecheng.content.model.po.*;
import com.xuecheng.content.service.CourseBaseInfoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class CourseBaseInfoServiceImpl implements CourseBaseInfoService {
    @Autowired
    CourseBaseMapper courseBaseMapper;
    @Autowired
    CourseMarketMapper courseMarketMapper;
    @Autowired
    CourseCategoryMapper courseCategoryMapper;


    @Autowired
    TeachplanMapper teachplanMapper;

    @Autowired
    TeachplanMediaMapper teachplanMediaMapper;

    @Autowired
    CourseTeacherMapper courseteacherMapper;

    /**
     * 课程分页查询接口
     * @param pageParams
     * @param queryCourseParamsDto
     * @return
     */
@Transactional
    @Override
    public PageResult<CourseBase> queryCourseBaseList(PageParams pageParams, QueryCourseParamsDto queryCourseParamsDto) {

        //测试查询接口
        LambdaQueryWrapper<CourseBase> queryWrapper = new LambdaQueryWrapper<>();


        //拼接查询条件
        //根据课程名称模糊查询  name like '%名称%'
        queryWrapper.like(StringUtils.isNotEmpty(queryCourseParamsDto.getCourseName()),CourseBase::getName,queryCourseParamsDto.getCourseName());
        //根据课程审核状态
        queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getAuditStatus()),CourseBase::getAuditStatus,queryCourseParamsDto.getAuditStatus());
        //根据课程发布状态
        queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getPublishStatus()),CourseBase::getStatus,queryCourseParamsDto.getPublishStatus());


        //分页参数
        pageParams.setPageNo(1L);//页码
        pageParams.setPageSize(10L);//每页记录数
        Page<CourseBase> page = new Page<>(pageParams.getPageNo(), pageParams.getPageSize());

        //分页查询E page 分页参数, @Param("ew") Wrapper<T> queryWrapper 查询条件
        Page<CourseBase> pageResult = courseBaseMapper.selectPage(page, queryWrapper);

        //数据
        List<CourseBase> items = pageResult.getRecords();
        //总记录数
        long total = pageResult.getTotal();

        //准备返回数据 List<T> items, long counts, long page, long pageSize
        PageResult<CourseBase> courseBasePageResult = new PageResult<>(items, total, pageParams.getPageNo(), pageParams.getPageSize());
        System.out.println(courseBasePageResult);
        return courseBasePageResult;
    }
    /**
     * 新增课程
     *
     * @param dto
     * @return
     */
    @Transactional//增删改都要加入事务控制注解
    @Override
    public CourseBaseInfoDto createCourseBase(Long companyId, AddCourseDto dto) {
        //向课程基本信息表course_base写入数据
        //合法性校验(现在在controller层使用Validated校验)
//        if (StringUtils.isBlank(dto.getName())) {
//            throw new XueChengPlusException("课程名称为空");
//        }
//
//        if (StringUtils.isBlank(dto.getMt())) {
//            throw new RuntimeException("课程分类为空");
//        }
//
//        if (StringUtils.isBlank(dto.getSt())) {
//            throw new RuntimeException("课程分类为空");
//        }
//
//        if (StringUtils.isBlank(dto.getGrade())) {
//            throw new RuntimeException("课程等级为空");
//        }
//
//        if (StringUtils.isBlank(dto.getTeachmode())) {
//            throw new RuntimeException("教育模式为空");
//        }
//
//        if (StringUtils.isBlank(dto.getUsers())) {
//            throw new RuntimeException("适应人群为空");
//        }
//
//        if (StringUtils.isBlank(dto.getCharge())) {
//            throw new RuntimeException("收费规则为空");
//        }
        //新增对象
        CourseBase courseBaseNew = new CourseBase();
        //将填写的课程信息赋值给新增对象
        BeanUtils.copyProperties(dto,courseBaseNew);
        //设置审核状态
        courseBaseNew.setAuditStatus("202002");
        //设置发布状态
        courseBaseNew.setStatus("203001");
        //机构id
        courseBaseNew.setCompanyId(companyId);
        //添加时间
        courseBaseNew.setCreateDate(LocalDateTime.now());
        //插入课程基本信息表
        int insert = courseBaseMapper.insert(courseBaseNew);
        if(insert<=0){
            throw new RuntimeException("新增课程基本信息失败");
        }








        //向课程营销系course_market写入数据
        //合法性校验

        //向课程营销表保存课程营销信息
        //课程营销信息
        CourseMarket courseMarketNew = new CourseMarket();
        Long courseId = courseBaseNew.getId();
        BeanUtils.copyProperties(dto,courseMarketNew);
        courseMarketNew.setId(courseId);
        int i = saveCourseMarket(courseMarketNew);
        if(i<=0){
            throw new RuntimeException("保存课程营销信息失败");
        }
        //查询课程基本信息及营销信息并返回
        return getCourseBaseInfo(courseId);

    }

    //单独一个方法保存课程营销信息
    private int saveCourseMarket(CourseMarket courseMarketNew){
        //收费规则
        String charge = courseMarketNew.getCharge();
        if(StringUtils.isBlank(charge)){
            throw new RuntimeException("收费规则没有选择");
        }
        //收费规则为收费
        if(charge.equals("201001")){
            if(courseMarketNew.getPrice() ==null || courseMarketNew.getPrice().floatValue()<=0){
                throw new XueChengPlusException("课程的价格不能为空并且必须大于0");
            }
        }

        //根据id从课程营销表查询
        CourseMarket courseMarketObj = courseMarketMapper.selectById(courseMarketNew.getId());
        if(courseMarketObj == null){
            return courseMarketMapper.insert(courseMarketNew);
        }else{
            BeanUtils.copyProperties(courseMarketNew,courseMarketObj);
            courseMarketObj.setId(courseMarketNew.getId());
            return courseMarketMapper.updateById(courseMarketObj);
        }
    }

    /**
     * 根据课程id查询课程信息
     * @param courseId
     * @return
     */
    //根据课程id查询课程基本信息，包括基本信息和营销信息
    public CourseBaseInfoDto getCourseBaseInfo(Long courseId){

        CourseBase courseBase = courseBaseMapper.selectById(courseId);
        if(courseBase == null){
            return null;
        }
        CourseMarket courseMarket = courseMarketMapper.selectById(courseId);
        CourseBaseInfoDto courseBaseInfoDto = new CourseBaseInfoDto();
        BeanUtils.copyProperties(courseBase,courseBaseInfoDto);
        if(courseMarket != null){
            BeanUtils.copyProperties(courseMarket,courseBaseInfoDto);
        }

        //查询分类名称
        CourseCategory courseCategoryBySt = courseCategoryMapper.selectById(courseBase.getSt());
        courseBaseInfoDto.setStName(courseCategoryBySt.getName());
        CourseCategory courseCategoryByMt = courseCategoryMapper.selectById(courseBase.getMt());
        courseBaseInfoDto.setMtName(courseCategoryByMt.getName());

        return courseBaseInfoDto;


    }

    /**
     * 修改课程信息
     * @param companyId  机构id
     * @param dto  课程信息
     * @return
     */
    @Override
    public CourseBaseInfoDto updateCourseBase(Long companyId, EditCourseDto dto) {
        //课程id
        Long courseId = dto.getId();
        //合法性校验，根据具体的业务逻辑去校验
        CourseBase courseBase = courseBaseMapper.selectById(courseId);
        if(courseBase==null){
            XueChengPlusException.cast("课程不存在");
        }

        //校验本机构只能修改本机构的课程
        if(!courseBase.getCompanyId().equals(companyId)){
            XueChengPlusException.cast("本机构只能修改本机构的课程");
        }

        //封装基本信息的数据
        BeanUtils.copyProperties(dto,courseBase);
        courseBase.setChangeDate(LocalDateTime.now());

        //更新课程基本信息
        int i = courseBaseMapper.updateById(courseBase);

        //封装营销信息的数据
        CourseMarket courseMarket = new CourseMarket();
        BeanUtils.copyProperties(dto,courseMarket);
        saveCourseMarket(courseMarket);
        //查询课程信息
        CourseBaseInfoDto courseBaseInfo = this.getCourseBaseInfo(courseId);
        return courseBaseInfo;

    }

    /**
     * 删除课程
     * @param companyId
     * @param courseId
     */
    public void deleteCourseBase(Long companyId, Long courseId) {
        //根据id查询课程
        CourseBase courseBase = courseBaseMapper.selectById(courseId);
        //判断课程是否是该机构的
        if (!courseBase.getCompanyId().equals(companyId)) {
            XueChengPlusException.cast("本机构只能删除本机构课程");
        }
        LambdaQueryWrapper<CourseTeacher> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(CourseTeacher::getCourseId, courseId);
        CourseTeacher courseTeacher = courseteacherMapper.selectOne(queryWrapper);
        if (courseTeacher != null) {
            //删除讲师信息
            courseteacherMapper.deleteById(courseTeacher);
        }
        LambdaQueryWrapper<CourseMarket> Wrapper = new LambdaQueryWrapper<>();
        Wrapper.eq(CourseMarket::getId, courseId);
        CourseMarket courseMarket = courseMarketMapper.selectOne(Wrapper);
        if (courseMarket != null) {
            //删除收费信息
            courseMarketMapper.deleteById(courseMarket);
        }
        LambdaQueryWrapper<TeachplanMedia> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(TeachplanMedia::getCourseId, courseId);
        TeachplanMedia teachplanMedia = teachplanMediaMapper.selectOne(wrapper);
        if (teachplanMedia != null) {
            //删除媒资信息
            courseMarketMapper.deleteById(courseTeacher);
        }
        LambdaQueryWrapper<Teachplan> qwrapper = new LambdaQueryWrapper<>();
        qwrapper.eq(Teachplan::getCourseId, courseId);
        List<Teachplan> teachplan = teachplanMapper.selectList(qwrapper);
        if (teachplan != null) {
            for (Teachplan t:
                    teachplan ) {
                //删除课程计划
                teachplanMapper.deleteById(t);
            }
        }
        //删除课程信息
        courseBaseMapper.deleteById(courseBase);

    }


}
